SIMPLEX 4190-9051 Supervised Individual Addressable Module (IAM)Individual addressable modules (IAMs) receive both power and communications from a two wire MAPNET II or IDNet circuit. They provide location specific addressability to a single initiating device (such as single station smoke detector alarm contacts or heat detector contacts) or multiple devices at the same location by monitoring normally open dry contacts and the wiring to an end of line resistor. Model 4090 9051 is an encapsulated package with wire